Text 1 is the correct description of the image. It accurately describes the elementary school classroom setting, the green chalkboard, the smart board, the teacher at the front, and the students seated at individual desks. It also correctly mentions the wooden floors, colorful posters, and the general atmosphere of the room.

Text 2 is incorrect because it describes a high school science laboratory with lab benches, sinks, and scientific equipment, none of which are present in the image. The description of students wearing safety goggles and the teacher in a lab coat is also inaccurate.

Text 3 is incorrect as it portrays a university lecture hall with ascending rows of seats and a podium, which does not match the classroom in the image. The description of university-aged students and complex mathematical equations on a projection screen is also not consistent with what's shown.